This study examines control strategies developed for wastewater treatment via partial nitration and the anaerobic ammonium oxidation process with the objective of enhancing nitrogen removal efficiency. The implementation of different control strategies were analyzed and explained with the help of pictorial representations. The benefits of the different control strategies were also briefly discussed. The biological process of nitrogen removal requires appropriate pairing between control and manipulated variables. Furthermore, the approach to follow when selecting suitable candidates and determining the pairing criterion was discussed. Although the conventional feedback-feedforward control logic is easy to implement, incorporation of the nonlinearity and complexity associated with the processes requires the design of advanced control systems.